Field performance evaluation of NOVOPHALT modified asphalt concrete

Abstract

In 1992, a research project was set up to evaluate the field performance of Novophalt Modified Asphalt Cement (NMAC). The IM-35-3(223)130 project area (I-35 between Northeast 23rd and 63rd, in Oklahoma City) made up the location where the evaluation was to be done. Asphalt concrete laydown operations for the project were completed in October, 1992. Project IM- 35-3(223)130 consisted ofremoving 4 Yi inches of existing pavement by cold milling, then replacing it with 3 inches of Type "A" AC and a 1 Yi in thick surface course. The surface course contained sections of Type "B" AC with "Polymer modified" (PMAC 1-B) binder, Novophalt Modified binder (NMAC), and unmodified AC-20 binder. Section with the various binders are located as shown in Figure 1. The project was 3.229 miles long. The contract amount was $1,688,040. The Construction Report is attached. The report describes the laydown operation and gives general information on NMAC.